Registration is made via credit card option or EFT/Money Transfer method at https://buyukadayarimaratonu.com/kayit/.
The registration form must be filled out completely and the registration fee must be paid as specified. Once payment is made, registration will be completed. To register in bulk, you must send an e-mail to info@buyukadayarimaratonu.com.
We have categories for men and women in the 5K, 10K and 21K courses.
There are 18-35, 36-45, 46-55, 56+ age categories for Women and Men for all three tracks.
Early Registration Dates ( January 12, 2026 – April 19, 2026)
21K and 10K: – TL
5K: – TL
Normal Registration Dates (April 20, 2026 – September 6, 2026)
21K and 10K: – TL
5K: – TL
Late Registration Dates (September 7, 2026 – September 21, 2026)
21K and 10K: – TL
5K: – TL
Registrations will not be accepted after September 21, 2026. Participation is limited to quotas.
The quota limit is 3,500 peoples. Registrations are closed after the quota is filled, regardless of the dates.
Complete your registration without delay to take your place in Büyükada.
Category/Track change requests are met as follows while online registration for the competition is open;
If there are more than 80 days until the competition day, free changes will be charged. Between 79-40 days, a change fee of 90 TL will be charged, and for periods less than 40 days, a change fee of 130 TL will be charged.
There will be no category or track changes after September 14, 2026.
Registration fee or ID number cannot be transferred to anyone else.
Since our service processes start from the moment you register, registration cancellation, postponement or refund will not be made. Even if you do not participate in the race, you will be able to receive your race package from the distribution point.
You can give a nice surprise to your running friend by gifting a race registration at https://buyukadayarimaratonu.com/kayit/givegift.php.
Those who do not have any health problems can participate in the runs.
Transportation to Büyükada is only possible by sea vehicles. Participants can reach the race area using public transportation.
Ferry services may vary depending on the policies implemented by the companies, it is recommended to check the current information on the companies’ websites when planning transportation.
You can find the Island hotels on our website where you can stay at special prices for the athletes who will participate in our event soon.
If the race kit is requested to be collected by someone else, both the recipient and the recipient acknowledge that this is done with their own consent and that they assume all responsibility.
The following documents must be submitted to our team at the time of collection for the participant whose kit will be collected.
– The competitor’s signed consent form (You can download it here)
– A photocopy of the competitor’s ID
*The following text must be written at the bottom of the ID copy and submitted with a wet signature.
*I hereby consent to the delivery of my Decathlon Büyükada Half Marathon 2026 Running Kit to ………………… on behalf of the person whose information is given here.
– Time measurement chip
– Chest number
– Cloth bag
– Racing T-Shirt
– Sponsor treats
A safety deposit tent will be set up in the area. You are kindly requested not to bring your valuables.
The organization and authorities are not responsible for lost items.
For any questions you may have about the event, you should send an e-mail to info@buyukadayarimaratonu.com.
Decathlon Büyükada Half Marathon will start on Sunday, September 27, 2026. The runs will start between 10:00 – 10:30.
At the end of the competition, just like last year, you can find our refreshments in front of Adalar Kültür Merkezi after the finish point. Liquid and nutrition stations will be waiting for you on the track.